POWER SUPPLY APPARATUS FOR OPERATION
First Claim
1. A power supply apparatus for operation for outputting power to a surgical instrument comprising:
- a resonant frequency detection section for detecting a resonant frequency which minimizes the impedance of the surgical instrument;
a resonant frequency setting section for setting in advance an allowable variation amount of the resonant frequency per unit time as a reference variation amount; and
an abnormality detection section for detecting whether or not a detected variation amount of the resonant frequency per unit time exceeds the reference variation amount.
1 Assignment
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Accused Products
Abstract
A power supply apparatus for operation for outputting power to a surgical instrument includes a resonant frequency detection section for detecting a resonant frequency which minimizes the impedance of the surgical instrument, and an abnormality detection section for detecting whether or not a value of the resonant frequency or a variation amount of the resonant frequency per unit time exceeds a predetermined numerical range or a reference variation value. The predetermined numerical range or the reference variation value is set on the basis of a value and a variation amount of the resonant frequency corresponding to a temperature change of the surgical instrument. By detecting an abnormality in this manner, the surgical instrument can be prevented from being broken.
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Citations
7 Claims
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1. A power supply apparatus for operation for outputting power to a surgical instrument comprising:
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a resonant frequency detection section for detecting a resonant frequency which minimizes the impedance of the surgical instrument; a resonant frequency setting section for setting in advance an allowable variation amount of the resonant frequency per unit time as a reference variation amount; and an abnormality detection section for detecting whether or not a detected variation amount of the resonant frequency per unit time exceeds the reference variation amount. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification